U.S. Patriot missile stockpiles critically depleted amid Iran war and Ukraine conflict

The U.S. war in Iran has critically depleted key air defense and offensive missile stockpiles, with Patriot interceptors down by two-thirds and THAAD inventories halved. While President Donald Trump and the Pentagon publicly deny any shortages, the administration has requested $116 billion in funding to replenish stores. Meanwhile, these shortages have severely impacted Ukraine, where depleted air defenses failed to stop a deadly Russian missile strike on Kyiv, killing at least 17 people.

Patriot interceptor stockpile depletion

• ▪Individual Patriot PAC-3 interceptor missiles are estimated to cost between $4 million and $5 million each.
• ▪The U.S. Army awarded Lockheed Martin a contract worth up to $58.6 billion in July 2026 to produce Patriot interceptor missiles.
• ▪A newly produced single Patriot air defense battery costs over $1 billion, including $400 million for the system itself and $690 million for its associated missiles.
• ▪A Center for Strategic and International Studies analysis estimated that U.S. Patriot missile stockpiles were depleted by approximately two-thirds between February and July 2026, leaving fewer than 850 interceptors.

THAAD missile inventory reduction

• ▪CNN reported that the U.S. military had depleted 80 percent of its THAAD interceptors, a figure that Secretary of Defense Pete Hegseth contested as untrue.
• ▪The Center for Strategic and International Studies estimated that the U.S. military's Terminal High Altitude Area Defense (THAAD) interceptor inventory was reduced by half during the Iran war, leaving approximately 234 to 250 missiles by late July 2026.

Iran war munitions consumption

• ▪The U.S. military has used up just under half of its stockpile of Tomahawk land-attack cruise missiles since February 2026, firing over 1,000 Tomahawks by late April 2026.
• ▪The United States approved the sale of 5,250 Patriot interceptor missiles to Gulf allies Bahrain, Kuwait, Qatar, and the United Arab Emirates to replenish their depleted stocks.
• ▪The U.S. Army has expended virtually all of its stockpiles of ground-launched offensive ballistic missiles, specifically the Army Tactical Missile System (ATACMS) and the Precision Strike Missile (PrSM), during the war in Iran.
• ▪Saudi Arabia expended approximately 86 percent of its 2,800 Patriot PAC-3 interceptors during the first 38 days of the Iran conflict, leaving about 400 missiles in April 2026.

Ukraine air defense shortage

• ▪Ukrainian President Volodymyr Zelenskyy stated that delays in supplying Patriot interceptor missiles directly cause horrific casualties, noting that 2026 deliveries fell to one-third of the 2025 level.
• ▪A Russian aerial attack on Ukraine overnight on August 5, 2026, killed at least 17 people in Kyiv because depleted Ukrainian air defenses failed to intercept any of the 24 incoming ballistic missiles.
• ▪Ukraine has received only about 600 Patriot interceptor missiles total over four and a half years of war, forcing Ukrainian forces to achieve a highly efficient one-to-one interception ratio.
• ▪Lockheed Martin introduced the PAC-3 Adapted Capability Effector (ACE) interceptor in July 2026, which is designed to target short-range ballistic missiles at half the cost of a standard Patriot missile.

Trump administration stockpile denials

• ▪President Donald Trump posted on Truth Social threatening long-term jail sentences for leakers who disclosed information about depleted U.S. munitions stockpiles.
• ▪Reports indicated that President Donald Trump clashed with Defense Secretary Pete Hegseth at Camp David in late July 2026 over why he had been misled about munitions shortages that could limit military options against Iran.
• ▪Despite public denials of shortages, the Trump administration requested $95 billion in its Fiscal Year 2027 defense budget and $21 billion in a supplemental funding request to replenish weapons stores.
• ▪President Donald Trump and the Pentagon publicly denied reports of dangerously low munitions, asserting that the U.S. military has a deep arsenal and everything it needs to execute operations.

European allies limited capacity

• ▪European NATO allies have limited capacity to supply Patriot interceptors to Ukraine because they possess fewer systems than the U.S. and have already transferred significant portions of their stocks.
• ▪The U.S. and Ukraine are discussing an option to manufacture some Patriot components in Ukraine for final assembly in Germany to bypass production delays.
• ▪The U.S. has diverted Patriot interceptor missiles that European allies had already purchased and paid for to restock depleted U.S. military inventories.